Answer:
The dust present in the clouds.
Explanation:
The complicated composition molecules that can be found in space are generally associated with clouds of dust. The significant amount of dust in these clouds provides protection not only for these molecules, but for any body that makes up or is associated with dust clouds.
It is exactly this dust that protects the molecules against the action of ultraviolet rays.
Answer:
The coefficient of static friction between the puppy and the floor is 0.7273.
Explanation:
The horizontal force applied to move the puppy from a steady state has to be greater than the force of static friction, after it is moving the force needs to be equal to be greater than the force of dynamic friction in order to maintain its movement. The force of static friction is given by:
Where is the static friction force, is the coefficient of static friction and is the normal force. Since there's no angle on the flor the normal force is equal to the weight of the puppy, therefore, , to make the puppy moving we need to use a force of 80 N, therefore, , so we can solve for the coefficient as shown below:
The coefficient of static friction between the puppy and the floor is 0.7273.
If the temperature in the tank is decreased this would imply that the kinetic energy of molecule decreases because of the ideal gas law:
PV= nRT (Since Pressure is directly proportional to Temperature).
So the answer is B.The air pressure in the rigid tank decreases.
Hope this helps you.
A.
Explain
Metals are good conductors of heat, which is important for cooking (both heating and cooling occurs rapidly